A
pallet bin device comprises a supporting frame. A lifting
machine and a conveyer line are arranged in the supporting frame. A guide mechanism is arranged on the top of the supporting frame. A horizontal movement mechanism is arranged on the guide mechanism. The bottom of the horizontal movement mechanism attracts a
pallet mechanical arm through an
electromagnet. A lifting mechanism is further arranged on the portion, above the conveyer line, of the supporting frame. The lifting frame comprises a counter weight, a vertical rail, a roller
assembly, a steel
wire rope, a fixed
pulley and limiting guide wheels. The roller
assembly is fixed to the side wall of the
pallet mechanical arm. When the pallet mechanical arm horizontally moves to the position over the conveyer line, the roller
assembly can enter the vertical rail, one end of the steel
wire rope is perpendicularly connected with the pallet mechanical arm through the limiting guide wheel, the other end of the steel
wire rope is wound around the fixed
pulley to be connected with the counter weight, and the weight of the counter weight is larger than that of the pallet mechanical arm and smaller than the sum of the weight of the pallet mechanical arm and the weight of one pallet. According to the pallet bin device, ascending and descending of the lifting mechanism are achieved through
weight difference, the requirement for the
load capacity of the pallet mechanical arm is lowered, and when one pallet is fed, the positions of other pallets cannot be influenced.